package com.foryang.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {
    public String paymentInfo_OK(Integer id){
        return "线程池：" + Thread.currentThread().getName() + "paymentInfo_OK" + id + "\t" + "ok ok!";
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "5000")
    })
    public String paymentInfo_Timeout(Integer id){
//        int i = 1 / 0; //模拟程序出错，服务降级

        //模拟服务超时，服务降级
        try {
            TimeUnit.MILLISECONDS.sleep(3000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池：" + Thread.currentThread().getName() + "paymentInfo_Timeout" + id + "\t" + "no no!耗时（秒）："; //+ timeNumber;
    }

    public String paymentInfo_TimeOutHandler(Integer id){
        return "线程池：" + Thread.currentThread().getName() + "8001系统paymentInfo_Timeout" + id + "\t" + "Handler!";
    }



    //服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),  //是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"), //请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"),  //时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60")  //失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if(id < 0){
            throw new RuntimeException("**********id不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName() + "\t" + "调用成功，流水号：" + serialNumber;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id){
        return "id不能负数，请稍后再试！       id:"+id;
    }
}
